//
//  VisitorLoginView.swift
//  SinaWeibo
//
//  Created by admin on 16/1/16.
//  Copyright © 2016年 mac. All rights reserved.
//

import UIKit
// 定义访客视图的协议
@objc protocol  VisitorLoginViewDelegate : NSObjectProtocol {
        //协议提供方法
    //必选的协议方法
    //登录的协议方法
    optional func userWilllogin()
    //注册的协议方法
    func userWillRegister()
}

class VisitorLoginView: UIView {
    
     // 提供代理方法   weak/  assgin(5.0 以前用)
     //  在swift中 所有的属性默认都是strong修饰
     weak var visitorViewDelegate: VisitorLoginViewDelegate?
    
    
    
    // 对外提供设置访客视图的信息
      func setWithInfo(tipText : String,imageName: String?)  {
    tipLabel.text = tipText
        if let name = imageName {
        circleView.image =  UIImage(named: name)
        iconView.hidden = true
        //  将圆圈视图   放到最顶层
            bringSubviewToFront(circleView)
        } else {
           // 首页圆圈视图添加动画效果
            startAnimation()
        
        }
       
    }
    
    private func startAnimation()
    {
       let anim = CABasicAnimation(keyPath: "transform.rotation")
        anim.repeatCount = MAXFLOAT
        anim.duration = 20.0
        anim.toValue = 2 * M_PI
        // 完成动画 & 当视图处于非活跃状态  将动画移除图层
        anim.removedOnCompletion = false
        // 添加动画
        circleView.layer.addAnimation(anim, forKey: nil)
    }
 
    override init(frame: CGRect) {
        super.init(frame: frame)
        setupUI()
    }
   
    required init?(coder aDecoder: NSCoder) {
          fatalError("init(coder:) has not been implemented")
  
    }
 
    private func setupUI() {
       //  添加子视图
        addSubview(circleView)
        addSubview(backView)
        addSubview(iconView)
        addSubview(tipLabel)
    
        addSubview(loginBtn)
        addSubview(registerBtn)
   
       //  设置布局
       // VFL 进行自动布局
        // 使用VFL手动添加约束  必须将frame设置视图位置的属性关闭
        for v  in subviews
        {
           v.translatesAutoresizingMaskIntoConstraints = false
        
        }
        addConstraint(NSLayoutConstraint(item: circleView, attribute: .CenterX, relatedBy: .Equal, toItem: self, attribute: .CenterX, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: circleView, attribute: .CenterY, relatedBy: .Equal, toItem: self, attribute: .CenterY, multiplier: 1, constant: -60))
        
        addConstraint(NSLayoutConstraint(item: iconView, attribute: .CenterX, relatedBy: .Equal, toItem: circleView, attribute: .CenterX, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: iconView, attribute: .CenterY, relatedBy: .Equal, toItem: circleView, attribute: .CenterY, multiplier: 1, constant: 0))
        
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .CenterX, relatedBy: .Equal, toItem: circleView, attribute: .CenterX, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .Top, relatedBy: .Equal, toItem: circleView, attribute: .Bottom, multiplier: 1, constant: 16))
        
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 230))
        addConstraint(NSLayoutConstraint(item: tipLabel, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 40))
        
        
        
         //登录和注册 按钮的约束
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Left, relatedBy: .Equal, toItem: tipLabel, attribute: .Left, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Top, relatedBy: .Equal, toItem: tipLabel, attribute: .Bottom, multiplier: 1, constant: 20))
        
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 100))
        addConstraint(NSLayoutConstraint(item: loginBtn, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 35))
        
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Right, relatedBy: .Equal, toItem: tipLabel, attribute: .Right, multiplier: 1, constant: 0))
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Top, relatedBy: .Equal, toItem: tipLabel, attribute: .Bottom, multiplier: 1, constant: 20))
        
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Width, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 100))
        addConstraint(NSLayoutConstraint(item: registerBtn, attribute: .Height, relatedBy: .Equal, toItem: nil, attribute: .NotAnAttribute, multiplier: 1, constant: 35))
        
        //  添加遮罩视图约束
        addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|-0-[maskView]-0-|", options: [], metrics: nil, views: ["maskView":backView]))
         addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|-0-[maskView]-(-35)-[regBtn]", options: [], metrics: nil, views: ["maskView":backView,"regBtn":registerBtn]))
        
        // 设置背景颜色
        backgroundColor = UIColor(white: 0.93 ,alpha: 1)
        
        // 添加点击事件
        loginBtn.addTarget(self, action: "loginDidClick", forControlEvents: .TouchUpInside)
        registerBtn.addTarget(self, action: "registerDidClick", forControlEvents: .TouchUpInside)

    }
    // 响应方法
    @objc private func loginDidClick() {
        //visitorViewDelegate?判断代理是否为空
        //userWilllogin! 必须响应登录方法
        //userWilllogin? 是否响应协方法  responderSelector
        visitorViewDelegate?.userWilllogin?()



    }
    @objc private func registerDidClick() {
        visitorViewDelegate?.userWillRegister()

        
        
    }
    
    
    //懒加载子视图控件
    //圆圈
    private lazy var backView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_mask_smallicon"))
    private lazy var circleView: UIImageView = UIImageView(image: UIImage(named:  "visitordiscover_feed_image_smallicon"))
    //大房子
    private lazy var iconView: UIImageView = UIImageView(image: UIImage(named: "visitordiscover_feed_image_house"))
    
    //提示文案
    private lazy var tipLabel: UILabel = {
        let l = UILabel()
        l.text = "关注一些人，回这里看看有什么惊喜,关注一些人，回这里看看有什么惊喜"
        l.textColor = UIColor.darkGrayColor()
        l.font = UIFont.systemFontOfSize(14)
        // 设置行数
        l.numberOfLines = 0
        //设置居中显示
        l.textAlignment = NSTextAlignment.Center
            //设置大小
        l.sizeToFit()
        return l
        }()

    
    
    //登录按钮
    private lazy var loginBtn: UIButton = {
        let btn = UIButton()
        
        btn.setTitle("登录", forState: .Normal)
        btn.setBackgroundImage(UIImage(named: "common_button_white_disable"), forState: .Normal)
        btn.setTitleColor(UIColor.darkGrayColor(), forState: .Normal)
        btn.titleLabel?.font = UIFont.systemFontOfSize(15)
        btn.sizeToFit()
        return btn
        
        }()
    
    private lazy var registerBtn: UIButton = {
        let btn = UIButton()
        
        btn.setTitle("注册", forState: .Normal)
        btn.setBackgroundImage(UIImage(named: "common_button_white_disable"), forState: .Normal)
        btn.setTitleColor(UIColor.orangeColor(), forState: .Normal)
        btn.titleLabel?.font = UIFont.systemFontOfSize(15)
        btn.sizeToFit()
        return btn
        }()

    
}
